Pipe-coupling.



Patented Nov. 13, I900.

N0. BGLSIUG.

C. C. FISHER. PIPE COUPLING.

(Application filed Jan. 15, 1900.)

(No Modei.)

' PFC.

CHARLES C. FISHER, OF WARREN, PENNSYLVANIA, ASSIGNOR TO CHARLES P.NORTHROP, OF SAME PLACE.

MPH-COUPLING.

SPECIFICATION forming part of Letters Patent No. 661,506, dated November13, 1900. Application filed January 15, 1900. Serial No. 1,491. (Nomodel.)

To ctZZ whom it may concern:

Be it known that LOHARLES O. FIsHER,a citizen of the United States,residing at Warren, in the county of \Varren and State of Pen nsyl-Vania, have invented a new and useful Pipe- Coupling, of which thefollowing is a specification.

The invention relates to improvements in pipe-couplings.

to One object of the present invention is to improve the construction ofpipe-couplings and to provide a simple, inexpensive, and effioient oneof great durability adapted to permit the threaded ends of two pipes toI5 be screwed entirely within it, whereby it is adapted to provide atight joint and prevent leaks.

A further object of the invention is to re duce the weight to a minimumand to enable the thickened or enlarged pipe-receiving portions to bereadily engaged by a wrench or similar tool, so that it may be securelyheld while a pipe is being screwed into it.

Another object of the invention is to arrange the fastening devices forconnecting the plates or sections of the pipe-coupling so that they willsupport the gasket or packing in position and preventits displacementand thereby obviate any liability of breaking the device throughscrewing one of the fastening devices tightly before the others arebrought to substantially the same condition.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective view of a pipe-couplingconstructed in accordance with this invention. Fig. 2 is a sectionalview of the same, taken longitudinally of one of the fastening devices.Figs. 3 and at are detail perspective views of the plates or sections.

packing.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

l and 1 designate substantially circular plates or sections havingcentral openings 2 and provided on their exteriors with polygo- Fig. 5is a detail view of the gasket or nal enlargements 3, having circularopenings forming continuations of the openings 2 and provided withinterior screw-threads 5, adapted to receive the threaded ends of pipes6. The enlargements 3 increase the thickness of the plates or sectionsat the centers thereof and provide pipe-receiving sockets or openings ofsufficient length to receive entirely the threaded ends of the pipes tobe coupled, whereby such pipes may be screwed into the couplingsufficiently to form tight joints and to prevent leaks. The polygonalenlargements form wrench-receiving portions and are adapted to begripped by a wrench or similar tool to enable the coupling to be held orrotated while a pipe is being screwed into the same.

The circular plate or section 1 is provided with concentric ribs 7 and8, arranged at its inner face and rotated,respectively, at the cen terand periphery thereof. These ribs 7 and 8, which are adapted to fit incorresponding recesses or rabbets 9 and 10, form an intervening annularspace for the reception of a circular gasket or packing 11, which may beconstructed of any suitable mate rialsuch as lead, rubber, paper, orthelike. The rabbets or recesses 9 and 10, which are annular, arelocated at the center and periphery of the cir- 8o cular plate orsection 1 and form a circular or annular projecting face 12, adapted tofit between the concentric ribs 7 and 8 and compress the gasket orpacking, as clearly illustrated in Fig. 2 of the accompanying drawings.The annular ribs retain the gasket or packing in place and prevent anylateral movement of the same, as will be readily understood, and thereis no liability of the gasket being blown out of the coupling when thelatter is subjected to great pressure. The coupling is therefore adaptedto be employed on steam and various other kinds of pipes or conduit-sfor steam, liquids, and the like under high pressure. 9 5

The openings 2 adjacent to the inner faces of the plates or sections aresmooth, as clearly shown in Fig. 2, and as the threads are cut into thebores or openings of the polygonal enlargements shoulders are providedat the I00 outer edges of the smooth portions.

The plates or sections are provided at intervals with registeringopenings 13, receiving bolts or other suitable fastening devices andlocated at points between the concentric flanges, whereby the bolts letare adapted to pass through openings 15 of the gasket or packing toretain the latter in position and to prevent it from becoming displacedin assembling the parts. By arranging the fastening devices in thismanner there is no liability of the sections becoming broken by reasonof the displacement of the packing or gasket when one of the fasteningdevices is screwed or tightened in advance of the others. The bolts 14are preferably provided with heads 16 of rectangular or other polygonalshape, and the outer face of the plate or section 1 is provided withrecesses 17, conforming to the configuration of the heads 6 and formingseats for the same to lock the bolts against rotation when thenuts 18are screwed on them.

It will be seen that the pipe-coupling is exceedingly simple andinexpensive in construction, that it possesses great strength anddurability, and that it is especially adapted for oil, gas, steam, andsimilar pipes. also be apparent that the packing is securely held inplace and that the enlargements perform the double function of formingwrenchreceiving portions and of receiving entirely the threaded ends ofpipes, whereby the coupling is easily handled and is adapted to'affordtight joints.

What is claimed is- A pipe-coupling comprising two circular It willplates-arranged flat against each other and having central openings andprovided with registering perforations and having polygonal enlargements3 extending from their outer faces and interiorly threaded, one of theplates being provided at its inner face with concentric ribs 7 and 8arranged at its inner and outer peripheries and forming an interveningannular space, the inner rib 7 being arranged in alinement with saidenlargements 3 and provided with a smooth inner face and the other platebeing provided at its inner and outer peripheries with annular recesses9 and 10 receiving the said ribs 7 and 8 and forming an enlarged flatannular projecting portion 12, spaced from the inner and outer edges ofthe plate and fitting within the said ann ular space, the circularpacking also arranged in the said annular space and provided withperforations registering with the said perforations, and the fasteningdevices passing through the said perforations and connecting the platesand forming supports for the packing, and adapted to retain the latterin proper position with relation to the ribs and the enlargements whenthe parts are being assembled or separated, substantially as described.In testimony that I claim the foregoing as my own I- have hereto aflixedmy signature in the presence of two Witnesses.

CHARLES C. FISHER.

Witnesses:

E. H. BESHLIN, O. P. NORTHROP.

